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NFS Server running 2.6.0-test2

DISCUSSION Robert L. Harris 2 participants 4 messages Jul 29, 2003 – Jul 30, 2003

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#0 lore raw

Just converted my nfs server to 2.6.0-test2 last night. This morning I found this on my console:

{0}:/>
Message from syslogd@camel at Tue Jul 29 00:02:30 2003 ... camel kernel: journal commit I/O error

{0}:/>mount
.
.
/dev/md/0 on /mnt/data1 type ext3 (rw)

{0}:/>find /mnt/data1/backups/www/tarballs -name www-\*tgz -mtime +7 -exec rm {} \;
rm: cannot remove `/mnt/data1/backups/www/tarballs/www-20030721.tgz':
Read-only file system

{0}:/>mount -o remount,rw /dev/md0
mount: block device /dev/md/0 is write-protected, mounting read-only

I have NFS Version 3 enabled but TCP disabled (was very laggy).

Robert

:wq!
---------------------------------------------------------------------------
Robert L. Harris | GPG Key ID: E344DA3B

                                         @ x-hkp://pgp.mit.edu 

DISCLAIMER:
These are MY OPINIONS ALONE. I speak for no-one else.

Diagnosis: witzelsucht

IPv6 = [email protected] http://ipv6.rdlg.net
IPv4 = [email protected] http://www.rdlg.net

#1 lore raw
Quoted 9 lines · On Tuesday July 29, [email protected] wrote:

Just converted my nfs server to 2.6.0-test2 last night. This morning I found this on my console:

{0}:/>
Message from syslogd@camel at Tue Jul 29 00:02:30 2003 ... camel kernel: journal commit I/O error

I'm guessing that the filesystem got an I/O error when writing to the device.
Anything in the kernel log that might confirm or deny this?

NeilBrown

#2 lore raw

The messages file is completely empty of any error messages related to anything disk or filesystem related from about 6 hours prior to the error up until the time I rebooted. In addition the actual device (RAID5 filesystem) is intact.

Robert

Thus spake Neil Brown ([email protected]):

Quoted 15 lines · On Tuesday July 29, [email protected] wrote:
Quoted 9 lines

Just converted my nfs server to 2.6.0-test2 last night. This morning I found this on my console:

{0}:/>
Message from syslogd@camel at Tue Jul 29 00:02:30 2003 ... camel kernel: journal commit I/O error

I'm guessing that the filesystem got an I/O error when writing to the device.
Anything in the kernel log that might confirm or deny this?

Quoted 6 lines

NeilBrown
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:wq!
---------------------------------------------------------------------------
Robert L. Harris | GPG Key ID: E344DA3B

                                         @ x-hkp://pgp.mit.edu 

DISCLAIMER:
These are MY OPINIONS ALONE. I speak for no-one else.

Diagnosis: witzelsucht

IPv6 = [email protected] http://ipv6.rdlg.net
IPv4 = [email protected] http://www.rdlg.net

#3 lore raw
Quoted 7 lines · On Tuesday July 29, [email protected] wrote:

The messages file is completely empty of any error messages related to anything disk or filesystem related from about 6 hours prior to the error up until the time I rebooted. In addition the actual device (RAID5 filesystem) is intact.

Well, it looks quite unplesant then.
That error message can only get printed if the JFS_ABORT flag is set for the ext3 journal, and whenever JFS_ABORT is set, the message:
Aborting journal on device ...
comes first. If you don't have that message, then the impossible has happened.

The impossible is usually caused either by bad memory (and a single-bit-error in memory could have caused this probem), or by some stray pointer corrupting something.

So, I would suggest memtest86 if that is convenient, followed by reporting the problem to the ext3 developers (see the MAINAINERS file).

This problem is unlikely to be related to the machine being an NFS server, though until we know the cause, nothing should be ruled out.

NeilBrown